52151989 has 2 divisors, whose sum is σ = 52151990. Its totient is φ = 52151988.

The previous prime is 52151933. The next prime is 52152019. The reversal of 52151989 is 98915125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 6589489 = 6750^2 + 2567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52151989 is a prime.

It is a super-2 number, since 2×52151989² = 5439659913312242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52151909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26075994 + 26075995.

It is an arithmetic number, because the mean of its divisors is an integer number (26075995).

Almost surely, 2^52151989 is an apocalyptic number.

It is an amenable number.

52151989 is a deficient number, since it is larger than the sum of its proper divisors (1).

52151989 is an equidigital number, since it uses as much as digits as its factorization.

52151989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 40.

The square root of 52151989 is about 7221.6334024928. The cubic root of 52151989 is about 373.6144162071.

The spelling of 52151989 in words is "fifty-two million, one hundred fifty-one thousand, nine hundred eighty-nine".